18
II step
– (When the
T1-T2 > 50°C
or
T3-T2 > 50°C
condition is fulfilled for another 10 minutes), the controller switches off the specific solar collector pump and generates a
sound signal and displays the following message:
LACK OF
FLOW, FAILURE OF THE P OR K PUMP, AIR-LOCKED SYSTEM, BLOCKED FLOW
. By pressing the key for
acceptance
the user will switch on the solar collector pump again. If the above-mentioned conditions continue, the alarm will be cyclically repeated.
ATTENTION! The LACK OF FLOW... message is off and the circulation pumps get unlocked automatically when the T1 or T3 temperature (scheme no
15 and 16) on solar
collectors falls below 50°C.
Lack of required pressure of the heat transfer fluid in the installation
The controller is equipped with a pressure control of the heat transfer fluid (the function Pressure switch enabled – see
Control parameters
).
The pressure drop below 1.5 bar for 30 minutes is indicated by the following message:
LACK OF REQUIRED PRESSURE.
By pressing the
key for acceptance the user will
return to the main screen of the controller. If the lack of pressure continues, the alarm will be cyclically repeated. The removal of the alarm consists in completing the installation with
the heat transfer fluid to the pressure of
2 bar
.
ATTENTION! Lack of required pressure will only display a message without interfering with the operation of the system and the controller.
Lack of required heater protection by titanium anode (applies to the GH26-P09A controller only).
The controller is used as a power supply for the titanium anode placed in the water heater for protection of the latter against corrosion.
The lack of anode, incorrect connection or damage to the anode circuit will switch on the sound alarm and display the message.
NO SUFFICIENT TANK PROTECTION
BY
TITANIUM ANODE
. The controller distinguishes the error type and displays the above-mentioned message with the relevant failure code:
No code
– information on the occurrence of a temporary failure
(1)
– open circuit of titanium anode,
(2)
– short circuit of titanium anode,
(3)
– controller error.
By pressing the
key for acceptance the user will switch off the controller. If the failure continues, the alarm will be cyclically repeated.
ATTENTION! The lack of proper protection of the water heater by the anode
may cause corrosion and damage of the heater.
14.
Information on marking and collecting used electrical and electronic equipment
A symbol found on the product or its packaging points to the necessity of separate collection of used electronic
equipment. This means that the product must not be thrown away together with other household waste. Correct disposal of old and used
electrical equipment may help to avoid potential damage to the environment and human health.
A user who should give the used equipment to a collector should be responsible for separate collection of used electronic equipment.
